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The 429 Cobra Jet block (also D0VE) has four-bolt main caps. But this cannot be determined with the oil pan installed because the Ford casting number is the same. If you’re unable to find a D0VE four-bolt main block, look for a D7TE or a D8TE 460 truck block which also has four-bolt main caps. These are more plentiful and just as durable as the older D0VE CJ/SCJ block.